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公开(公告)号:US5800795A
公开(公告)日:1998-09-01
申请号:US948213
申请日:1997-10-09
IPC分类号: C01B7/19
摘要: Process for the recovery of hydrogen fluoride (HF) from a mixture, preferably an azeotropic mixture, of HF with water and/or an organic compound such as 134a, 125 or 133a, which comprises contacting the mixture with lithium fluoride or an alkaline earth metal fluoride to form a metal fluoride-hydrogen fluoride compound (e.g. lithium bifluoride, LiHF.sub.2), separating the compound and decomposing it to liberate hydrogen fluoride therefrom. The process is useful for recovering HF from azeotropic or azeotropic-like mixtures.
摘要翻译: HF与水和/或有机化合物如134a,125或133a的混合物,优选共沸混合物回收氟化氢(HF)的方法,包括使该混合物与氟化锂或碱土金属 氟化物形成金属氟化物 - 氟化氢化合物(例如,二氟化锂,LiHF 2),分离化合物并将其分解以从其中释放出氟化氢。 该方法可用于从共沸或共沸混合物中回收HF。